Feature 5051/Add support for nested verse Objects

[PhotoNomad0]

Changes

• added support for nested verseObjects.
• updated usfm-js module to support for new USFM 2 & 3 markers

Testing

• unit tests should pass on Travis

This change is 

[codecov]

Codecov Report

Merging #6 into master will increase coverage by 3.83%.
The diff coverage is 97.84%.

@@            Coverage Diff            @@
##           master      #6      +/-   ##
=========================================
+ Coverage   82.56%   86.4%   +3.83%     
=========================================
  Files           4       4              
  Lines         413     478      +65     
  Branches       91     100       +9     
=========================================
+ Hits          341     413      +72     
+ Misses         51      46       -5     
+ Partials       21      19       -2

Impacted Files	Coverage Δ
src/js/utils/array.js	100% <100%> (ø)	⬆️
src/js/utils/verseObjects.js	81.67% <100%> (+2.67%)	⬆️
src/js/aligner.js	90.68% <94.82%> (+5.37%)	⬆️

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[richmahn]

Reviewed 8 of 14 files at r1, 10 of 10 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @PhotoNomad0)